+1 for Rodney Yee's DVD's once you have had some Yoga instruction. Two of my favorite Yee video's are a 1/2 hour Power Yoga: Flexability and a longer Yoga for Athletes. The second of these DVD's also includes a nice, short 10 minute stretch specific for cyclists. I have a history of back issues so I also LOVE, and my biking has benefited greatly, from Peggy Cappy's back-specific Yoga DVD's.